TONER AND IMAGE FORMING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a toner excellent in image density stability or image quality regardless of the temperature change accompanying endurance. SOLUTION: This toner having a toner grain having at least a binder resin and an external additive has the frictional charging characteristic of |C2|>|C1| with the same polarity when the frictional charging quantity of the toner at 30 deg.C and a humidity of 80%RH is C1 (mC/kg), and the frictional charging quantity at 50 deg.C and a humidity of 3%RH is C2.